WO2006083886A2 - Ion source for use in an ion implanter - Google Patents

Ion source for use in an ion implanter Download PDF

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Publication number
WO2006083886A2
WO2006083886A2 PCT/US2006/003429 US2006003429W WO2006083886A2 WO 2006083886 A2 WO2006083886 A2 WO 2006083886A2 US 2006003429 W US2006003429 W US 2006003429W WO 2006083886 A2 WO2006083886 A2 WO 2006083886A2
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WO
WIPO (PCT)
Prior art keywords
arc chamber
gas
source
support
flange
Prior art date
Application number
PCT/US2006/003429
Other languages
French (fr)
Other versions
WO2006083886A3 (en
Inventor
Klaus Becker
Werner Baer
Klaus Petry
Original Assignee
Axcelis Technologies, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Axcelis Technologies, Inc. filed Critical Axcelis Technologies, Inc.
Priority to DE602006016402T priority Critical patent/DE602006016402D1/en
Priority to CN2006800037936A priority patent/CN101167154B/en
Priority to KR1020077019995A priority patent/KR101229724B1/en
Priority to EP06734131A priority patent/EP1844487B1/en
Priority to JP2007554167A priority patent/JP4915621B2/en
Publication of WO2006083886A2 publication Critical patent/WO2006083886A2/en
Publication of WO2006083886A3 publication Critical patent/WO2006083886A3/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/30—Electron-beam or ion-beam tubes for localised treatment of objects
    • H01J37/317—Electron-beam or ion-beam tubes for localised treatment of objects for changing properties of the objects or for applying thin layers thereon, e.g. for ion implantation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/02—Details
    • H01J37/04—Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement, ion-optical arrangement
    • H01J37/08—Ion sources; Ion guns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J27/00—Ion beam tubes
    • H01J27/02—Ion sources; Ion guns
    • H01J27/08—Ion sources; Ion guns using arc discharge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/30—Electron-beam or ion-beam tubes for localised treatment of objects
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/30—Electron-beam or ion-beam tubes for localised treatment of objects
    • H01J37/317—Electron-beam or ion-beam tubes for localised treatment of objects for changing properties of the objects or for applying thin layers thereon, e.g. for ion implantation
    • H01J37/3171—Electron-beam or ion-beam tubes for localised treatment of objects for changing properties of the objects or for applying thin layers thereon, e.g. for ion implantation for ion implantation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
    • H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
    • H01L21/26—Bombardment with radiation
    • H01L21/263—Bombardment with radiation with high-energy radiation
    • H01L21/265—Bombardment with radiation with high-energy radiation producing ion implantation

Definitions

  • the present invention concerns semiconductor processing equipment generally and more specifically relates to ion implanters and a source of ions for such an implanter.
  • Ion implanters are known for use in treating workpieces such as silicon wafers. When such a wafer is bombarded with an ion beam, the silicon wafer is selectively doped with the ion impurity to create a semiconductor material from the original silicon material of the wafer. It is well known to create complex integrated circuits using such wafers. Circuit components on a small scale are created through use of masking techniques that selectively limit the exposure of the silicon to bombardment with the ions coming from an ion source.
  • Ion implanters generally fall into different categories that depend on their intended use.
  • One class implanter has a support that supports multiple wafers which are moved through a suitably shaped ion beam.
  • Other implanters treat or process one wafer at a time.
  • serial implanters the single wafer is mounted to a support that translates back and forth through a thin ribbon shaped beam coming from an ion source.
  • Both type implanters include a source of ions which typically ionize a source material such as Boron in either a gaseous or solid state and selectively accelerate and filter the resultant ion species to form a ribbon or pencil beam having a controlled dose and energy.
  • a typical ion source is a high frequency replacement item for the ion implanter.
  • the source includes an arc chamber in which the source material is ionized by means of a filament mounted within the arc chamber.
  • a plasma of ions is created which are extracted from the arc chamber and then accelerated.
  • the gas In chamber using a gaseous source material, the gas must be routed into the chamber from a source at atmospheric pressure to the sub atmospheric arc chamber. In the prior art when an arc chamber is replaced, a seal to atmosphere is broken between the gas source and the arc chamber.
  • the present disclosure concerns an ion source most preferably for use with semiconductor processing equipment having a workpiece support positioned in relation to the ion source and a transport system for delivering ions from the source to the workpiece support.
  • the ion source includes an arc chamber for ionizing a source material routed into the arc chamber and including an arc chamber body attached to the arc chamber and including a gas inlet which accepts gas from a source and a gas outlet which opens into the arc chamber and an arc chamber support which sealingly engages the arc chamber body at a region of the gas inlet and including a gas supply line for routing gas from a gas source to the gas inlet.
  • Figure 1 is an overview schematic of an ion implanter constructed in accordance with the invention
  • Figure 2 is side elevation view of a ion source arc chamber
  • Figure 3 is a bottom plan view of the ion source arc chamber of Figure 2;
  • Figure 4 is section view as seen from the plane 4-4 of Figure 3;
  • Figure 5 is a side elevation view of the ion source arc chamber
  • Figure 6 is a top plan view of the ion source arc chamber
  • Figure 7 is side elevation view of an arc chamber support
  • Figure 8 is a bottom plan view of the support of Figure 7;
  • Figure 9 is a view as seen from the plane 9-9 of Figure 8.
  • Figure 10 is side elevation view of the support of Figure 7;
  • Figure 11 is a top plan view of the mounting flange of Figure 7;
  • Figure 12 is a side view of the arc chamber and support in engagement with each other;
  • Figure 13 is a plan view of the depiction of Figure 12;
  • Figure 14 is a section view from the plane 14-14 of Figure 13; and
  • Figure 15 is a section view showing the arc chamber and chamber support being separated during replace of the arc chamber.
  • Fig. 1 is a schematic depiction of a typical ion implantation system 10 having a terminal 12, abeamline assembly 14, and an end station 16.
  • the terminal 12 includes an ion source 18 that produces and directs an ion beam 30 to the beamline assembly 14.
  • the source 18 is mounted to a source housing 22.
  • Suitable source materials are gasses delivered by a gas source 31 through a gas feed line 26.
  • the beamline assembly 14 consists of a beamguide 32 and a mass analyzer 28 in which a magnetic field is established to pass only ions of appropriate charge-to-mass ratio through a resolving aperture 34 to a workpiece 40 (e.g., a semiconductor wafer, display panel, etc.) in the end station 16.
  • the ion source 18 generates charged ions that are extracted from the source 18 and formed into the ion beam 30, which is directed along a beam path in the beamline assembly 14 to the end station 16.
  • the ion beam path is typically evacuated to reduce the probability of ions being deflected from the beam path through collisions with air molecules.
  • Low energy implanters are typically designed to provide ion beams of a few thousand electron volts (keV) up to around 80-100 keV, whereas high energy implanters can employ linear acceleration (linac) apparatus (not shown) between the mass analyzer 28 and the end station 16, so as to accelerate the mass analyzed beam 30 to higher energies, typically several hundred keV, wherein DC acceleration is also possible.
  • High energy ion implantation is commonly employed for deeper implants in the workpiece 40.
  • high current, low energy ion beams 30 are typically employed for high dose, shallow depth ion implantation.
  • end stations 16 Different forms of end stations 16 are found in implanters. "Batch" type end stations can simultaneously support multiple workpieces 40 on a rotating support structure, with the workpieces 40 being rotated through the path of the ion beam until all the workpieces 40 are completely implanted.
  • a "serial” type end station supports a single workpiece 40 along the beam path for implantation, whereby multiple workpieces 40 are implanted one at a time in serial fashion, with each workpiece 40 being completely implanted before implantation of the next workpiece 40 begins.
  • the exemplary implantation system 10 of Fig. 1 includes a serial end station 16, wherein the beamline assembly 14 includes a lateral scanner 36 that receives the ion beam 30 having a relatively narrow profile (e.g., a "pencil" beam), and scans the beam 30 back and forth in the X-direction to spread the beam 30 out into an elongated "ribbon" profile, having an effective X-direction width that is at least as wide as the workpiece 40.
  • the ribbon beam 30 is then passed through a parallelizer 38 that directs the ribbon beam generally parallel to the Z-direction toward the workpiece 40 (e.g. , the parallelized beam 30 is generally normal to the workpiece surface).
  • the workpiece 40 is mechanically translated in another orthogonal direction (e.g., a "Y" direction in and out of the page in Fig. 1), wherein a mechanical actuation apparatus (not shown) translates the workpiece 40 in the Y- direction during X-direction beam scanning by the scanner 36, whereby the beam 30 impacts on the entire exposed surface of the workpiece 40.
  • a mechanical actuation apparatus (not shown) translates the workpiece 40 in the Y- direction during X-direction beam scanning by the scanner 36, whereby the beam 30 impacts on the entire exposed surface of the workpiece 40.
  • the relative orientation of the beam 30 and the workpiece 40 may be adjusted accordingly.
  • FIGS. 2 - 15 disclose additional details of the ion source 18.
  • the source includes an arc chamber 110 for ionizing a source material delivered into the arc chamber.
  • a plasma is created within the chamber by means of a filament (not shown) or other energy sources.
  • the chamber 110 bounds a region 112 and defines an exit aperture 114 that allows ions in the region to exit and be accelerated along a travel path to the end station.
  • An arc chamber flange 120 is attached to the arc chamber and includes a first surface 122 that defines a gas inlet 124 which accepts an ionizable gas from a gas source 30.
  • a tube 126 coupled to the flange 120 routes gas from the inlet to a gas outlet 130 which opens into the arc chamber interior 112.
  • the arc chamber 110 and flange 120 to which the arc chamber is connected are replaceable at periodic intervals as a unit.
  • a source housing 22 for the arc source 18 includes a source flange 20 having a conforming surface 144 that sealingly engages the first surface 122 of the chamber flange around a region of the gas inlet 124.
  • the flange 142 includes a throughpassage 146 that aligns with the gas inlet.
  • a gas supply line 26 routes gas from the gas source 30 through the throughpassage 146 and into the gas inlet of the arc chamber flange.
  • the flange 142 is supported within the source housing 22by an elongated tube 152 that surrounds a travel path of ions leaving the arc chamber.
  • the elongated tube 152 is attached to interior walls of the housing 22.
  • the arc chamber flange 120 and the support flange 142 extend circumferentially around the arc chamber.
  • the two flanges engage each other along a circumferential seal region that helps maintain a vacuum in the region of ion implanter inside the tube 152.
  • the outside of the flanges 120, 142 is maintained at atmospheric pressure during operation of the implanter.
  • the circumferential seal region is implemented by an O- ring seal 162 located in a groove in the flange 120 that extends slightly above the flanges surface 122.
  • the inlet port 124 is radially inward of the O- ring seal 162 and is surrounded by a smaller diameter O-ring 163 in a groove that also extends slightly above the flange surface 122.
  • Figure 12 shows the two flanges with the arc chamber mounted to the support. Locating pins 154, 156 insure correct mating of the seals 162, 163 with the support flange.
  • the circumferential seal achieved by the o-ring seal 162 is an atmospheric seal that isolates high vacuum from atmosphere and must have very low leakage.
  • the seal around the inlet 124 maintained by the O-ring 163 is a low pressure seal. It only has to withstand the pressure differential that builds up by gas flow through the gas line 150 into the arc chamber. Leakage on the order of a few percent across this seal is acceptable since it leads to loss of process gas, but does not reduce the overall implanter performance.
  • the seal achieved by the O-ring 163 can be of moderate quality.
  • the arc chamber is a high wear item that is exchanged frequently.
  • at least one gas line connection has to be broken.
  • the connection around both the seals 162, 163 are broken.
  • the external gas line remains connected to the flange 142 and the high quality seal needed for the gas connection is not degraded.
  • the two flanges are held together by suitable fasteners (not shown) that compress the O-rings 162, 163 for initial sealing during pumping to vacuum.
  • these fasteners are loosened and the volume inside the tube 152 is vented to allow removal and replacement of the arc chamber without removing the gas supply line 26.

Abstract

An ion implanter (10) having a source (18), a workpiece support and a transport system for delivering ions from the source to an ion implantation chamber (16) that contains the workpiece support. The ion source has an arc chamber (110) for ionizing a source material routed into the arc chamber that defines an exit aperture (114) for routing ions to the transport system and including an arc chamber flange (120) attached to the arc chamber and including a first surface (122) that defines a gas inlet (124) which accepts gas from a source (30) and a gas outlet (130) which opens into the arc chamber. An arc chamber support includes a support flange (142) having a conforming surface (144) that sealingly engages the first surface of arc chamber flange at a region of the gas inlet and further includes a throughpassage (146) that aligns with the gas inlet. A gas supply line (26/126) routes gas from a gas source through the throughpassage of the support flange and into the gas inlet of said arc chamber flange.

Description

Ion Source for use in an Ion Implanter
Field of the Invention The present invention concerns semiconductor processing equipment generally and more specifically relates to ion implanters and a source of ions for such an implanter.
Background Art
Ion implanters are known for use in treating workpieces such as silicon wafers. When such a wafer is bombarded with an ion beam, the silicon wafer is selectively doped with the ion impurity to create a semiconductor material from the original silicon material of the wafer. It is well known to create complex integrated circuits using such wafers. Circuit components on a small scale are created through use of masking techniques that selectively limit the exposure of the silicon to bombardment with the ions coming from an ion source.
Ion implanters generally fall into different categories that depend on their intended use. One class implanter has a support that supports multiple wafers which are moved through a suitably shaped ion beam. Other implanters treat or process one wafer at a time. In these so called serial implanters, the single wafer is mounted to a support that translates back and forth through a thin ribbon shaped beam coming from an ion source.
Both type implanters include a source of ions which typically ionize a source material such as Boron in either a gaseous or solid state and selectively accelerate and filter the resultant ion species to form a ribbon or pencil beam having a controlled dose and energy. A typical ion source is a high frequency replacement item for the ion implanter. The source includes an arc chamber in which the source material is ionized by means of a filament mounted within the arc chamber. A plasma of ions is created which are extracted from the arc chamber and then accelerated. In chamber using a gaseous source material, the gas must be routed into the chamber from a source at atmospheric pressure to the sub atmospheric arc chamber. In the prior art when an arc chamber is replaced, a seal to atmosphere is broken between the gas source and the arc chamber. Summary of the Invention
The present disclosure concerns an ion source most preferably for use with semiconductor processing equipment having a workpiece support positioned in relation to the ion source and a transport system for delivering ions from the source to the workpiece support.
The ion source includes an arc chamber for ionizing a source material routed into the arc chamber and including an arc chamber body attached to the arc chamber and including a gas inlet which accepts gas from a source and a gas outlet which opens into the arc chamber and an arc chamber support which sealingly engages the arc chamber body at a region of the gas inlet and including a gas supply line for routing gas from a gas source to the gas inlet.
The disclosed ion source makes replacement of the source easier and thereby avoids lengthy periods of ion implanter downtime. These and other advantages and features of the disclosed embodiment are described in conjunction with the accompanying drawings.
Brief Desciption of the Drawings.
Figure 1 is an overview schematic of an ion implanter constructed in accordance with the invention;
Figure 2 is side elevation view of a ion source arc chamber; Figure 3 is a bottom plan view of the ion source arc chamber of Figure 2;
Figure 4 is section view as seen from the plane 4-4 of Figure 3;
Figure 5 is a side elevation view of the ion source arc chamber;
Figure 6 is a top plan view of the ion source arc chamber;
Figure 7 is side elevation view of an arc chamber support; Figure 8 is a bottom plan view of the support of Figure 7;
Figure 9 is a view as seen from the plane 9-9 of Figure 8;
Figure 10 is side elevation view of the support of Figure 7;
Figure 11 is a top plan view of the mounting flange of Figure 7;
Figure 12 is a side view of the arc chamber and support in engagement with each other;
Figure 13 is a plan view of the depiction of Figure 12; Figure 14 is a section view from the plane 14-14 of Figure 13; and Figure 15 is a section view showing the arc chamber and chamber support being separated during replace of the arc chamber.
Exemplary embodiments of the invention
Fig. 1 is a schematic depiction of a typical ion implantation system 10 having a terminal 12, abeamline assembly 14, and an end station 16. The terminal 12 includes an ion source 18 that produces and directs an ion beam 30 to the beamline assembly 14. The source 18 is mounted to a source housing 22. Suitable source materials are gasses delivered by a gas source 31 through a gas feed line 26.
The beamline assembly 14 consists of a beamguide 32 and a mass analyzer 28 in which a magnetic field is established to pass only ions of appropriate charge-to-mass ratio through a resolving aperture 34 to a workpiece 40 (e.g., a semiconductor wafer, display panel, etc.) in the end station 16. The ion source 18 generates charged ions that are extracted from the source 18 and formed into the ion beam 30, which is directed along a beam path in the beamline assembly 14 to the end station 16. The ion beam path is typically evacuated to reduce the probability of ions being deflected from the beam path through collisions with air molecules. Low energy implanters are typically designed to provide ion beams of a few thousand electron volts (keV) up to around 80-100 keV, whereas high energy implanters can employ linear acceleration (linac) apparatus (not shown) between the mass analyzer 28 and the end station 16, so as to accelerate the mass analyzed beam 30 to higher energies, typically several hundred keV, wherein DC acceleration is also possible. High energy ion implantation is commonly employed for deeper implants in the workpiece 40. Conversely, high current, low energy ion beams 30 are typically employed for high dose, shallow depth ion implantation.
Different forms of end stations 16 are found in implanters. "Batch" type end stations can simultaneously support multiple workpieces 40 on a rotating support structure, with the workpieces 40 being rotated through the path of the ion beam until all the workpieces 40 are completely implanted. A "serial" type end station, on the other hand, supports a single workpiece 40 along the beam path for implantation, whereby multiple workpieces 40 are implanted one at a time in serial fashion, with each workpiece 40 being completely implanted before implantation of the next workpiece 40 begins.
The exemplary implantation system 10 of Fig. 1 includes a serial end station 16, wherein the beamline assembly 14 includes a lateral scanner 36 that receives the ion beam 30 having a relatively narrow profile (e.g., a "pencil" beam), and scans the beam 30 back and forth in the X-direction to spread the beam 30 out into an elongated "ribbon" profile, having an effective X-direction width that is at least as wide as the workpiece 40. The ribbon beam 30 is then passed through a parallelizer 38 that directs the ribbon beam generally parallel to the Z-direction toward the workpiece 40 (e.g. , the parallelized beam 30 is generally normal to the workpiece surface). The workpiece 40 is mechanically translated in another orthogonal direction (e.g., a "Y" direction in and out of the page in Fig. 1), wherein a mechanical actuation apparatus (not shown) translates the workpiece 40 in the Y- direction during X-direction beam scanning by the scanner 36, whereby the beam 30 impacts on the entire exposed surface of the workpiece 40. For angled implants, the relative orientation of the beam 30 and the workpiece 40 may be adjusted accordingly.
Ion Source
Figures 2 - 15 disclose additional details of the ion source 18. The source includes an arc chamber 110 for ionizing a source material delivered into the arc chamber. A plasma is created within the chamber by means of a filament (not shown) or other energy sources. The chamber 110 bounds a region 112 and defines an exit aperture 114 that allows ions in the region to exit and be accelerated along a travel path to the end station. An arc chamber flange 120 is attached to the arc chamber and includes a first surface 122 that defines a gas inlet 124 which accepts an ionizable gas from a gas source 30. A tube 126 coupled to the flange 120 routes gas from the inlet to a gas outlet 130 which opens into the arc chamber interior 112. The arc chamber 110 and flange 120 to which the arc chamber is connected are replaceable at periodic intervals as a unit.
A source housing 22 for the arc source 18 includes a source flange 20 having a conforming surface 144 that sealingly engages the first surface 122 of the chamber flange around a region of the gas inlet 124. The flange 142 includes a throughpassage 146 that aligns with the gas inlet. A gas supply line 26 routes gas from the gas source 30 through the throughpassage 146 and into the gas inlet of the arc chamber flange.
The flange 142 is supported within the source housing 22by an elongated tube 152 that surrounds a travel path of ions leaving the arc chamber. The elongated tube 152 is attached to interior walls of the housing 22. The arc chamber flange 120 and the support flange 142 extend circumferentially around the arc chamber. The two flanges engage each other along a circumferential seal region that helps maintain a vacuum in the region of ion implanter inside the tube 152. The outside of the flanges 120, 142 is maintained at atmospheric pressure during operation of the implanter. In accordance with the exemplary embodiment, the circumferential seal region is implemented by an O- ring seal 162 located in a groove in the flange 120 that extends slightly above the flanges surface 122. The inlet port 124 is radially inward of the O- ring seal 162 and is surrounded by a smaller diameter O-ring 163 in a groove that also extends slightly above the flange surface 122.
Figure 12 shows the two flanges with the arc chamber mounted to the support. Locating pins 154, 156 insure correct mating of the seals 162, 163 with the support flange. The circumferential seal achieved by the o-ring seal 162 is an atmospheric seal that isolates high vacuum from atmosphere and must have very low leakage. The seal around the inlet 124 maintained by the O-ring 163 is a low pressure seal. It only has to withstand the pressure differential that builds up by gas flow through the gas line 150 into the arc chamber. Leakage on the order of a few percent across this seal is acceptable since it leads to loss of process gas, but does not reduce the overall implanter performance. The seal achieved by the O-ring 163 can be of moderate quality.
The arc chamber is a high wear item that is exchanged frequently. During arc chamber replacement at least one gas line connection has to be broken. In accordance with the disclosed embodiment the connection around both the seals 162, 163 are broken. The external gas line remains connected to the flange 142 and the high quality seal needed for the gas connection is not degraded. During use, the two flanges are held together by suitable fasteners ( not shown) that compress the O-rings 162, 163 for initial sealing during pumping to vacuum. When the arc chamber is replaced these fasteners are loosened and the volume inside the tube 152 is vented to allow removal and replacement of the arc chamber without removing the gas supply line 26. The present invention has been described with a degree of particularity. It is the intent, however, that the invention include all modifications and alterations from the disclosed design falling within the spirit or scope of the appended claims.

Claims

Claims
1. For use with semiconductor processing equipment having a source, a workpiece support and a transport system for delivering ions from the source to a region of the workpiece support, apparatus comprising: an arc chamber for ionizing a source material routed into the arc chamber and including an arc chamber body attached to the arc chamber and including a gas inlet which accepts gas from a source and a gas outlet which opens into an arc chamber interior; and an arc chamber support which sealingly engages the arc chamber body at a region of the gas inlet and including a gas supply line for routing gas from a gas source to the gas inlet.
2. The apparatus of claim 1 wherein the arc chamber body includes a generally planar surface which engages a conforming surface of the arc chamber support in a region of the gas inlet.
3. The apparatus of claim 2 comprising a seal member for sealing an engagement between the planar surface of the arc chamber body and the conforming surface of the arc chamber support around the gas inlet.
4. The apparatus of claim 2 wherein the arc chamber body and the arc chamber support include outwardly extending first and second flanges that engage each other along a circumferential region that is radially outward of the arc chamber.
5. The apparatus of claim 4 comprising a seal of flexible material supported by one of said flanges that compresses when engaged by one of said planar and conforming surfaces.
6. The apparatus of claim 5 additionally comprising a seal member of flexible material that seals an engagement between the first and second flanges around a region of the gas inlet.
7. For use with semiconductor processing equpment having a source, a workpiece support and a transport system for delivering ions from the source to a region of the workpiece support, apparatus comprising: an arc chamber for ionizing a source material routed into the arc chamber that defines an exit aperture for routing ions to the transport system and including an arc chamber flange attached to the arc chamber and including a first surface that defines a gas inlet which accepts gas from a source and a gas outlet which opens into an arc chamber interior; an arc chamber support including a support flange having a conforming surface that sealingly engages the first surface of arc chamber flange at a region of the gas inlet and further includes a throughpassage that aligns with the gas inlet; and a gas supply line for routing gas from a gas source through the throughpassage of the support flange and into the gas inlet of said arc chamber flange.
8. The apparatus of claim 7 wherein the arc chamber support includes an extension portion that surrounds ions leaving the arc chamber exit and wherein the arc chamber flange and the support flange extend circumferentially around the arc chamber and engage each other along a circumferential seal region that maintains a vacuum region of the ion implanter on one side of the circumferential seal region and atmospheric pressure on an opposite side of the circumferential seal region.
9. The apparatus of claim 8 wherein the circumferential seal region includes an o ring seal in a groove in one of said flanges.
10. An ion source comprising: an arc chamber for ionizing a source material routed into the arc chamber and including an arc chamber body attached to the arc chamber and including a gas inlet which accepts gas from a source and a gas outlet which opens into an arc chamber interior; and an arc chamber support which sealingly engages the arch chamber body at a region of the gas inlet and including a gas supply line for routing gas from a gas source to the gas inlet.
11. An ion source comprising: an arc chamber for ionizing a source material routed into the arc chamber that defines an exit aperture for routing ions to the transport system and including an arc chamber flange attached to the arc chamber and including a first surface that defines a gas inlet which accepts gas from a source and a gas outlet which opens into an arc chamber interior; and a support including a support flange having a conforming surface that sealingly engages the first surface of arc chamber flange at a region of the gas inlet and further includes a throughpassage that aligns with the gas inlet; and a gas supply line for routing gas from a gas source through the throughpassage of the support flange and into the gas inlet of said arc chamber flange.
12. For use with semiconductor processing equipment having an ion source, a workpiece support and a transport system for delivering ions from the ion source to a region of the workpiece support, a method comprising: positioning a support such that a portion of the support bounds a path of travel for ions and includes a support flange radially outward from the portion that bounds the path of travel and includes a gas throughpassage that extends through the support flange; providing a conduit for routing ionization gases to the throughpassage in the support flange; and mounting an source arc chamber for ionizing gases to the support such that a gas inlet of the arc chamber aligns with the throughpassage of the support flange.
13. The method of claim 12 additionally comprising sealing an engagement between the support flange and the gas inlet of the arc chamber.
14. The method of claim 13 wherein the arc chamber includes an arc chamber flange that engages the support flange around a periphery of said support flange and additionally comprising sealing an engagement between the arc chamber flange and the support flange in the region of periphery.
PCT/US2006/003429 2005-02-03 2006-01-31 Ion source for use in an ion implanter WO2006083886A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE602006016402T DE602006016402D1 (en) 2005-02-03 2006-01-31 ION SOURCE FOR USE IN A ION IMPLANTER
CN2006800037936A CN101167154B (en) 2005-02-03 2006-01-31 Ion source for use in an ion implanter
KR1020077019995A KR101229724B1 (en) 2005-02-03 2006-01-31 Ion source for use in an ion implanter
EP06734131A EP1844487B1 (en) 2005-02-03 2006-01-31 Ion source for use in an ion implanter
JP2007554167A JP4915621B2 (en) 2005-02-03 2006-01-31 Ion source for ion implanter

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Application Number Priority Date Filing Date Title
US11/049,913 US7105840B2 (en) 2005-02-03 2005-02-03 Ion source for use in an ion implanter
US11/049,913 2005-02-03

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WO2006083886A2 true WO2006083886A2 (en) 2006-08-10
WO2006083886A3 WO2006083886A3 (en) 2007-08-23

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TWI404108B (en) 2013-08-01
CN101167154B (en) 2010-10-13
KR20070107098A (en) 2007-11-06
US7105840B2 (en) 2006-09-12
JP4915621B2 (en) 2012-04-11
CN101167154A (en) 2008-04-23
JP2008546132A (en) 2008-12-18
EP1844487A2 (en) 2007-10-17
US20060169921A1 (en) 2006-08-03
KR101229724B1 (en) 2013-02-15
EP1844487B1 (en) 2010-08-25
WO2006083886A3 (en) 2007-08-23
DE602006016402D1 (en) 2010-10-07
TW200632978A (en) 2006-09-16

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